well have you checked EINC?
as for own airfield, I've done some research and so far this is what I've found: first you need to decide what type of airfield is it going to be - licensed or non-licensed. To license an airfield, it has to go through IAA process, but if you don't plan to use it for training/IFR, you don't need to have it licensed
next thing you will need a planing permission from your local county. It depends how the land is zoned, if it's residential/farm land, you probably won't be able to get permission for your strip, whereas if it's not zoned for anything, you might have a chance. For that matter, I don't think you can apply for a planning permission for a land that doesn't belong to you. To make things even worse, if there are neighbours near by they will probably say nay to the whole thing and that will be that...
then there's the usage - I was not able to find exact figures for Ireland, but if you intend to use the airfield exceeding certain number of days in a year you have to have the environmental impact analysis done to avoid fines, I read somewhere that in UK the number is 28 days per year, other countries allow different figures. Basically that means who ever does the analysis can either shut you down or limit you to certain number of take-off's/landings and certain type of aircraft.
As it often happens, if you want to do things in the right, legal way, bureaucracy will tear the skin off your bones and you won't get anywhere.. however, if you choose to keep that little strip of yours to yourself somewhere far from the greedy eyes, you might just get away with it.
I'm not suggesting anything btw, all decisions at your own discretion please
anyway if anyone else has more or different findings, please share